CAA: Christian Anime Alliance

It's ME again! CAA's favorite math inept moderator!

So, I'm doing this calculus project for tommorrow and I'm completely stuck! Please, somebody help me.

So, I'm supoosed to find approximations to the regions given below using both LHS and RHS:

1. The area under the curve y=1/[square root off cx] between x=0.1 and x=20. Use n=50 and n=1000.

Now, if any of you are familiar with "derive" from your calculus days, it's a math calculating program released by Texas Instruments. That's what I'm using to do the project.

Is it imperative that you use the TI calculator? Could you do the integration some other way (eg. Riemann sum, etc), or could you write a simple BASIC program? You can also check your answer by calculating the definite integral of f(x). Hint: remember that d/dx [x^a]=(a)*x^(a-1), where a is not necessarily an integer.

(I'm not sure if this is too late..)
I'm not quite sure what the problem you have is... do you want help with using the program? (Sorry, I can't help you there, but it seems like all you'd need to do is enter the equation, the endpoints, n, and the LH/mid/RH points.) Or do you need help in understanding how they're calculated manually?